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| version 1.34, 2001/03/28 09:38:08 | version 1.94, 2001/12/13 10:47:34 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: commonly functions. | Parser: commonly functions. |
| Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) | Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com) |
| Author: Alexander Petrosyan <paf@design.ru>(http://paf.design.ru) | |
| Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf) | |
| $Id$ | $Id$ |
| */ | */ |
| #include "pa_config_includes.h" | |
| #include <fcntl.h> | |
| #include <sys/stat.h> | |
| #include <io.h> | |
| #include <stdio.h> | |
| #include <errno.h> | |
| #include "pa_common.h" | #include "pa_common.h" |
| #include "pa_types.h" | #include "pa_types.h" |
| #include "pa_exception.h" | #include "pa_exception.h" |
| Line 26 | Line 16 |
| #include "pa_hash.h" | #include "pa_hash.h" |
| #include "pa_string.h" | #include "pa_string.h" |
| #if _MSC_VER | // some maybe-undefined constants |
| int __vsnprintf(char *b, size_t s, const char *f, va_list l) { | #ifndef _O_TEXT |
| int r=_vsnprintf(b, --s, f, l); | # define _O_TEXT 0 |
| b[s]=0; | #endif |
| return r; | #ifndef _O_BINARY |
| # define _O_BINARY 0 | |
| #endif | |
| #ifndef O_TRUNC | |
| # define O_TRUNC 0 | |
| #endif | |
| // locking constants | |
| #ifndef LOCK_EX | |
| // win32 | |
| # ifdef _LK_LOCK | |
| # define LOCK_EX _LK_LOCK | |
| # else | |
| // sun | |
| # ifdef F_LOCK | |
| # define LOCK_EX F_LOCK | |
| # else | |
| # error unable to define LOCK_EX | |
| # endif | |
| # endif | |
| #endif | |
| #ifndef LOCK_SH | |
| // win32 | |
| # ifdef _LK_RLCK | |
| # define LOCK_SH _LK_RLCK | |
| # else | |
| // sun | |
| /// @todo shared lock bit. forgot where to get those F_LOCK consts group | |
| # ifdef F_LOCK | |
| # define LOCK_SH F_LOCK | |
| # else | |
| # error unable to define LOCK_SH | |
| # endif | |
| # endif | |
| #endif | |
| #ifndef LOCK_UN | |
| // win32 | |
| # ifdef _LK_UNLCK | |
| # define LOCK_UN _LK_UNLCK | |
| # else | |
| // sun | |
| # ifdef F_ULOCK | |
| # define LOCK_UN F_ULOCK | |
| # else | |
| # error unable to define LOCK_UN | |
| # endif | |
| # endif | |
| #endif | |
| #ifndef HAVE_FLOCK | |
| // win32 | |
| #ifdef HAVE__LOCKING | |
| static void flock(int fd, int operation) { | |
| lseek(fd, 0, SEEK_SET); | |
| while(_locking(fd, operation, 1)!=0); | |
| lseek(fd, 0, SEEK_SET); | |
| } | } |
| int __snprintf(char *b, size_t s, const char *f, ...) { | #else |
| va_list l; | // sun |
| va_start(l, f); | #ifdef HAVE_LOCKF |
| int r=__vsnprintf(b, s, f, l); | static void flock(int fd, int operation) { |
| va_end(l); | lseek(fd, 0, SEEK_SET); |
| return r; | lockf(fd, operation, 1); |
| lseek(fd, 0, SEEK_SET); | |
| } | } |
| #else | |
| #error unable to find locking func | |
| #endif | |
| #endif | |
| #endif | #endif |
| static char *strnchr(char *buf, size_t size, char c) { | |
| for(; size-->0; buf++) { | |
| if(*buf==c) | |
| return buf; | |
| } | |
| return 0; | |
| } | |
| void fix_line_breaks(char *buf, size_t& size) { | |
| //_asm int 3; | |
| const char * const eob=buf+size; | |
| char *dest=buf; | |
| // fix DOS: \r\n -> \n | |
| // fix Macintosh: \r -> \n | |
| char *bol=buf; | |
| while(char *eol=strnchr(bol, eob -bol, '\r')) { | |
| size_t len=eol-bol; | |
| if(dest!=bol) | |
| memcpy(dest, bol, len); | |
| dest+=len; | |
| *dest++='\n'; | |
| if(&eol[1]<eob && eol[1]=='\n') { // \r,\n = DOS | |
| bol=eol+2; | |
| size--; | |
| } else // \r,not \n = Macintosh | |
| bol=eol+1; | |
| } | |
| // last piece without \r, including terminating 0 | |
| if(dest!=bol) | |
| memcpy(dest, bol, eob-bol); | |
| } | |
| char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) { | char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) { |
| void *result; | void *result; size_t size; |
| size_t size; | return file_read(pool, file_spec, result, size, true, fail_on_read_problem)?(char *)result:0; |
| return | |
| file_read(pool, file_spec, result, size, fail_on_read_problem)?(char *)result:0; | |
| } | } |
| bool file_read(Pool& pool, const String& file_spec, | bool file_read(Pool& pool, const String& file_spec, |
| void*& data, size_t& size, bool as_text, | void*& data, size_t& data_size, bool as_text, |
| bool fail_on_read_problem) { | bool fail_on_read_problem, |
| char *fname=file_spec.cstr(); | size_t offset, size_t limit) { |
| const char *fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| //printf("file_read(%s)\n", fname); | |
| int f; | int f; |
| struct stat finfo; | struct stat finfo; |
| // first open, next stat: | // first open, next stat: |
| // directory update of NTFS symbolic links performed on open. | // directory update of NTFS hard links performed on open. |
| // ex: | // ex: |
| // a.html:^test[] and b.html hardlink to a.html | // a.html:^test[] and b.html hardlink to a.html |
| // user inserts ! before ^test in a.html | // user inserts ! before ^test in a.html |
| // directory entry of b.html in NTFS not updated at once, | // directory entry of b.html in NTFS not updated at once, |
| // they delay update till open, so we must not do stat before that | // they delay update till open, so we would receive "!^test[" string |
| // if would do stat, next open. | |
| if( | if( |
| (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 && | (f=open(fname, O_RDONLY|(as_text?_O_BINARY/*_O_TEXT*/:_O_BINARY)))>=0 && |
| stat(fname, &finfo)==0) { | stat(fname, &finfo)==0) { |
| /*if(exclusive) | flock(f, LOCK_SH); |
| flock(f, LOCK_EX);*/ | size_t max_size=limit?min(offset+limit, finfo.st_size)-offset:finfo.st_size; |
| data=pool.malloc(finfo.st_size+(as_text?1:0)); | int read_size; |
| size=read(f, data, finfo.st_size); | if(!max_size) { // eof |
| /*if(exclusive) | if(as_text) { |
| flock(f, LOCK_UN);*/ | data=pool.malloc(1); |
| *(char*)data=0; | |
| } else | |
| data=0; | |
| read_size=0; | |
| } else { | |
| data=pool.malloc(max_size+(as_text?1:0), 3); | |
| if(offset) | |
| lseek(f, offset, SEEK_SET); | |
| read_size=read(f, data, max_size); | |
| } | |
| flock(f, LOCK_UN); | |
| close(f); | close(f); |
| if(!max_size) // eof | |
| return true; | |
| if(size>=0 && size<=(size_t)finfo.st_size) { | if(read_size<0 || size_t(read_size)>max_size) |
| if(as_text) | throw Exception(0, 0, |
| ((char *)data)[size]=0; | |
| } else | |
| PTHROW(0, 0, | |
| &file_spec, | &file_spec, |
| "read failed: actually read %d bytes count not in [0..%ul] valid range", | "read failed: actually read %d bytes count not in [0..%lu] valid range", |
| size, (unsigned long)finfo.st_size); | read_size, (unsigned long)max_size); //never |
| return true;//prepare_config(result, remove_empty_lines); | data_size=read_size; |
| if(as_text) { | |
| fix_line_breaks((char *)data, data_size); | |
| // note: after fixing | |
| ((char*&)data)[data_size]=0; | |
| } | |
| return true; | |
| } | } |
| if(fail_on_read_problem) | if(fail_on_read_problem) |
| PTHROW(0, 0, | throw Exception(0, 0, |
| &file_spec, | &file_spec, |
| "read failed: %s (#%d)", strerror(errno), errno); | "read failed: %s (%d), actual filename '%s'", |
| strerror(errno), errno, fname); | |
| return false; | return false; |
| } | } |
| static void create_dir_for_file(const String& file_spec) { | |
| size_t pos_after=1; | |
| int pos_before; | |
| while((pos_before=file_spec.pos("/", 1, pos_after))>=0) { | |
| mkdir(file_spec.mid(0, pos_before).cstr(String::UL_FILE_SPEC), 0775); | |
| pos_after=pos_before+1; | |
| } | |
| } | |
| void file_write(Pool& pool, | void file_write(Pool& pool, |
| const String& file_spec, | const String& file_spec, |
| const void *data, size_t size, | const void *data, size_t size, |
| bool as_text/*, | bool as_text, |
| bool exclusive*/) { | bool do_append) { |
| char *fname=file_spec.cstr(); | const char *fname=file_spec.cstr(String::UL_FILE_SPEC); |
| int f; | int f; |
| if(access(fname, F_OK)!=0) {/*no*/ | if(access(fname, W_OK)!=0) // no |
| if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0) | create_dir_for_file(file_spec); |
| close(f); | |
| } | if((f=open(fname, |
| if(access(fname, R_OK|W_OK)==0) { | O_CREAT|O_RDWR |
| int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY) | |(as_text?_O_TEXT:_O_BINARY) |
| #ifdef WIN32 | |(do_append?O_APPEND:O_TRUNC), 0664))>=0) { |
| |O_TRUNC | flock(f, LOCK_EX); |
| if(size) write(f, data, size); | |
| #if O_TRUNC==0 | |
| ftruncate(f, size); | |
| #endif | #endif |
| ; | flock(f, LOCK_UN); |
| if((f=open(fname, mode, 0666))>=0) { | close(f); |
| /*if(exclusive) | } else |
| flock(f, LOCK_EX);*/ | throw Exception(0, 0, |
| &file_spec, | |
| if(size) write(f, data, size); | "write failed: %s (%d), actual filename '%s'", |
| #ifndef WIN32 | strerror(errno), errno, fname); |
| ftruncate(f, size); | |
| #endif | |
| /*if(exclusive) | |
| flock(f, LOCK_UN);*/ | |
| close(f); | |
| return; | |
| } | |
| } | |
| PTHROW(0, 0, | |
| &file_spec, | |
| "write failed: %s (#%d)", strerror(errno), errno); | |
| } | } |
| void file_delete(Pool& pool, const String& file_spec) { | // throws nothing! [this is required in file_move & file_delete] |
| if(unlink(file_spec.cstr())!=0) | static void rmdir(const String& file_spec, size_t pos_after) { |
| PTHROW(0, 0, | int pos_before; |
| &file_spec, | if((pos_before=file_spec.pos("/", 1, pos_after))>=0) |
| "unlink failed: %s (#%d)", strerror(errno), errno); | rmdir(file_spec, pos_before+1); |
| rmdir(file_spec.mid(0, pos_after-1/* / */).cstr(String::UL_FILE_SPEC)); | |
| } | } |
| bool file_delete(Pool& pool, const String& file_spec, bool fail_on_read_problem) { | |
| const char *fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| if(unlink(fname)!=0) | |
| if(fail_on_read_problem) | |
| throw Exception(0, 0, | |
| &file_spec, | |
| "unlink failed: %s (%d), actual filename '%s'", | |
| strerror(errno), errno, fname); | |
| else | |
| return false; | |
| rmdir(file_spec, 1); | |
| return true; | |
| } | |
| void file_move(Pool& pool, const String& old_spec, const String& new_spec) { | |
| const char *old_spec_cstr=old_spec.cstr(String::UL_FILE_SPEC); | |
| const char *new_spec_cstr=new_spec.cstr(String::UL_FILE_SPEC); | |
| create_dir_for_file(new_spec); | |
| if(rename(old_spec_cstr, new_spec_cstr)!=0) | |
| throw Exception(0, 0, | |
| &old_spec, | |
| "rename failed: %s (%d), actual filename '%s' to '%s'", | |
| strerror(errno), errno, old_spec_cstr, new_spec_cstr); | |
| rmdir(old_spec, 1); | |
| } | |
| static bool entry_readable(const String& file_spec, bool need_dir) { | |
| const char *fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| struct stat finfo; | |
| if(access(fname, R_OK)==0 && stat(fname, &finfo)==0) { | |
| bool is_dir=finfo.st_mode&S_IFDIR != 0; | |
| return is_dir==need_dir; | |
| } | |
| return false; | |
| } | |
| bool file_readable(const String& file_spec) { | bool file_readable(const String& file_spec) { |
| return access(file_spec.cstr(), R_OK)==0; | return entry_readable(file_spec, false); |
| } | |
| bool dir_readable(const String& file_spec) { | |
| return entry_readable(file_spec, true); | |
| } | |
| String *file_readable(const String& path, const String& name) { | |
| String *result=new(path.pool()) String(path); | |
| *result << "/"; | |
| *result << name; | |
| return file_readable(*result)?result:0; | |
| } | |
| bool file_executable(const String& file_spec) { | |
| return access(file_spec.cstr(String::UL_FILE_SPEC), X_OK)==0; | |
| } | |
| bool file_stat(const String& file_spec, | |
| size_t& rsize, | |
| time_t& ratime, | |
| time_t& rmtime, | |
| time_t& rctime, | |
| bool fail_on_read_problem) { | |
| Pool& pool=file_spec.pool(); | |
| const char *fname=file_spec.cstr(String::UL_FILE_SPEC); | |
| struct stat finfo; | |
| if(stat(fname, &finfo)!=0) | |
| if(fail_on_read_problem) | |
| throw Exception(0, 0, | |
| &file_spec, | |
| "getting file size failed: %s (%d), real filename '%s'", | |
| strerror(errno), errno, fname); | |
| else | |
| return false; | |
| rsize=finfo.st_size; | |
| ratime=finfo.st_atime; | |
| rmtime=finfo.st_mtime; | |
| rctime=finfo.st_ctime; | |
| return true; | |
| } | } |
| char *getrow(char **row_ref, char delim) { | char *getrow(char **row_ref, char delim) { |
| Line 181 char *rsplit(char *string, char delim) { | Line 362 char *rsplit(char *string, char delim) { |
| return NULL; | return NULL; |
| } | } |
| /// @todo less stupid type detection | |
| char *format(Pool& pool, double value, char *fmt) { | char *format(Pool& pool, double value, char *fmt) { |
| char *result=(char *)pool.malloc(MAX_NUMBER); | char *result=(char *)pool.malloc(MAX_NUMBER, 4); |
| if(fmt) | if(fmt) |
| if(strpbrk(fmt, "diouxX")) | if(strpbrk(fmt, "diouxX")) |
| if(strpbrk(fmt, "ouxX")) | if(strpbrk(fmt, "ouxX")) |
| Line 197 char *format(Pool& pool, double value, c | Line 379 char *format(Pool& pool, double value, c |
| return result; | return result; |
| } | } |
| size_t stdout_write(const char *buf, size_t size) { | size_t stdout_write(const void *buf, size_t size) { |
| #ifdef WIN32 | #ifdef WIN32 |
| do{ | do{ |
| int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout); | int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout); |
| if(chunk_written<=0) | if(chunk_written<=0) |
| break; | break; |
| size-=chunk_written; | size-=chunk_written; |
| buf+=chunk_written; | buf=((const char*)buf)+chunk_written; |
| } while(size>0); | } while(size>0); |
| return size; | return size; |
| Line 213 size_t stdout_write(const char *buf, siz | Line 395 size_t stdout_write(const char *buf, siz |
| #endif | #endif |
| } | } |
| const char *unescape_chars(Pool& pool, const char *cp, int len) { | char *unescape_chars(Pool& pool, const char *cp, int len) { |
| char *s=(char *)pool.malloc(len + 1); | char *s=(char *)pool.malloc(len + 1, 5); |
| enum EscapeState { | enum EscapeState { |
| EscapeRest, | EscapeRest, |
| EscapeFirst, | EscapeFirst, |
| Line 251 const char *unescape_chars(Pool& pool, c | Line 433 const char *unescape_chars(Pool& pool, c |
| return s; | return s; |
| } | } |
| /// used by attributed_meaning_to_string / append_attribute_subattribute | |
| struct Attributed_meaning_info { | |
| String *header; // header line being constructed | |
| String::Untaint_lang lang; // language in which to append to that line | |
| }; | |
| static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue, | static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue, |
| void *info) { | void *info) { |
| if(akey==VALUE_NAME) | if(akey==VALUE_NAME) |
| return; | return; |
| Attributed_meaning_info& ami=*static_cast<Attributed_meaning_info *>(info); | |
| // ...; charset=windows1251 | // ...; charset=windows1251 |
| String *string=static_cast<String *>(info); | *ami.header << "; "; |
| string->APPEND_CONST("; "); | ami.header->append(akey, ami.lang); |
| string->append(akey, String::UL_HEADER, true); | *ami.header << "="; |
| string->APPEND_CONST("="); | ami.header->append(static_cast<Value *>(avalue)->as_string(), ami.lang); |
| string->append(static_cast<Value *>(avalue)->as_string(), | |
| String::UL_HEADER, true); | |
| } | } |
| const String& attributed_meaning_to_string(Value& meaning) { | const String& attributed_meaning_to_string(Value& meaning, |
| String::Untaint_lang lang) { | |
| String &result=*new(meaning.pool()) String(meaning.pool()); | String &result=*new(meaning.pool()) String(meaning.pool()); |
| if(Hash *hash=meaning.get_hash()) { | if(Hash *hash=meaning.get_hash(0)) { |
| // $value(value) $subattribute(subattribute value) | // $value(value) $subattribute(subattribute value) |
| if(Value *value=static_cast<Value *>(hash->get(*value_name))) | if(Value *value=static_cast<Value *>(hash->get(*value_name))) |
| result.append(value->as_string(), String::UL_HEADER, true); | result.append(value->as_string(), lang, true); |
| hash->for_each(append_attribute_subattribute, &result); | Attributed_meaning_info attributed_meaning_info={ |
| &result, | |
| lang | |
| }; | |
| hash->for_each(append_attribute_subattribute, &attributed_meaning_info); | |
| } else // result value | } else // result value |
| result.append(meaning.as_string(), String::UL_HEADER, true); | result.append(meaning.as_string(), lang, true); |
| return result; | return result; |
| } | } |
| Line 285 void back_slashes_to_slashes(char *s) { | Line 477 void back_slashes_to_slashes(char *s) { |
| if(*s=='\\') | if(*s=='\\') |
| *s='/'; | *s='/'; |
| } | } |
| /* | |
| void slashes_to_back_slashes(char *s) { | |
| if(s) | |
| for(; *s; s++) | |
| if(*s=='/') | |
| *s='\\'; | |
| } | |
| */ | |
| #endif | #endif |
| bool StrEqNc(const char *s1, const char *s2, bool strict) { | |
| while(true) { | |
| if(!(*s1)) { | |
| if(!(*s2)) | |
| return true; | |
| else | |
| return !strict; | |
| } else if(!(*s2)) | |
| return !strict; | |
| if(isalpha(*s1)) { | |
| if(tolower(*s1) !=tolower(*s2)) | |
| return false; | |
| } else if((*s1) !=(*s2)) | |
| return false; | |
| s1++; | |
| s2++; | |
| } | |
| } | |
| static bool isLeap(int year) { | |
| return !( | |
| (year % 4) || ((year % 400) && !(year % 100)) | |
| ); | |
| } | |
| int getMonthDays(int year, int month) { | |
| int monthDays[]={ | |
| 31, | |
| isLeap(year) ? 29 : 28, | |
| 31, | |
| 30, | |
| 31, | |
| 30, | |
| 31, | |
| 31, | |
| 30, | |
| 31, | |
| 30, | |
| 31 | |
| }; | |
| return monthDays[month]; | |
| } | |
| void remove_crlf(char *start, char *end) { | |
| for(char *p=start; p<end; p++) | |
| switch(*p) { | |
| case '\n': *p='|'; break; | |
| case '\r': *p=' '; break; | |
| } | |
| } | |
| /// must be last in this file | |
| #undef vsnprintf | |
| int __vsnprintf(char *b, size_t s, const char *f, va_list l) { | |
| if(!s) | |
| return 0; | |
| int r; | |
| // note: on win32& maybe somewhere else | |
| // vsnprintf do not writes terminating 0 in 'buffer full' case, reducing | |
| --s; | |
| #if _MSC_VER | |
| /* | |
| win32: | |
| mk:@MSITStore:C:\Program%20Files\Microsoft%20Visual%20Studio\MSDN\2001APR\1033\vccore.chm::/html/_crt__vsnprintf.2c_._vsnwprintf.htm | |
| if the number of bytes to write exceeds buffer, then count bytes are written and –1 is returned | |
| */ | |
| r=_vsnprintf(b, s, f, l); | |
| if(r<0) | |
| r=s; | |
| #else | |
| r=vsnprintf(b, s, f, l); | |
| /* | |
| solaris: | |
| man vsnprintf | |
| The snprintf() function returns the number of characters | |
| formatted, that is, the number of characters that would have | |
| been written to the buffer if it were large enough. If the | |
| value of n is 0 on a call to snprintf(), an unspecified | |
| value less than 1 is returned. | |
| */ | |
| if(r<0) | |
| r=0; | |
| else if(r>s) | |
| r=s; | |
| #endif | |
| b[r]=0; | |
| return r; | |
| } | |
| int __snprintf(char *b, size_t s, const char *f, ...) { | |
| va_list l; | |
| va_start(l, f); | |
| int r=__vsnprintf(b, s, f, l); | |
| va_end(l); | |
| return r; | |
| } |